Optional
Audio encoding: 'raw' (headerless L16) or 'wav'/'wave'. Default: 'raw'.
Sample rate for raw audio. Default: stream's sampleRate.
Optional ID — returned in the playDone event.
If true, queue after current playback. If false (default), interrupt current.
Audio encoding: 'raw' (headerless L16) or 'wav'/'wave'. Default: 'raw'.